Featured Item View 9 Photos View 0 Videos USED CAT 3406E Engine 550HP | Serial 2WS | 1999-2000 | Heavy Duty Diesel Motor TESTED, WARRANTY $22,780 USD Caterpillar CAT 3406E Diesel Engine for Sale – 550HP, We are offering aCAT 3406E enginein good used condition, a reliable and powerful option for heavy-duty truck applications.... Warranty ConditionUsedHorse Power550 HPWill Fit Year(s)1999-2000Stock Number2184 MLS Number14321708CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 10 Photos View 0 Videos USED 1998 Caterpillar 3406E (40 PIN) 1LW Engine 550HP Strong Runner – Warranty $20,000 USD Caterpillar 3406E – 550HP – 1LW – 40 Pin – Used – Strong Runner – Warranty, Reliable Caterpillar 3406E 1LW diesel engine removed from a running unit and verified as a strong running takeout... Warranty ConditionUsedHorse Power550 HPStock Number2180 MLS Number14311458CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 10 Photos View 0 Videos 2010 Mack MP8-505E Engine, Good Running Takeout, Warranty $13,750 USD Mack MP8-505E – 505HP – Used – Good Running Takeout – Warranty, Reliable Mack MP8-505E diesel engine removed from a running unit and verified as a good running takeout prior to removal.... Warranty ConditionUsedHorse Power505 HPStock Number2178 MLS Number14308395CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 9 Photos View 0 Videos 2001 USED CAT C15 6NZ 550HP Engine – Strong Runner – Warranty $27,500 USD Caterpillar C15 6NZ Diesel Engine – 550HP – Used – Strong Runner – Warranty, Reliable Caterpillar C15 6NZ diesel engine removed from a running unit and verified as a strong running takeout... Warranty ConditionUsedHorse Power550 HPStock Number2177 MLS Number14303657CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 9 Photos View 0 Videos 2014 Cummins ISX15 550HP Engine – TESTED – GOOD RUNNER – USED $20,000 USD 2014 Cummins ISX15 Diesel Engine – 550HP – Run Tested, This listing represents a 2014 Cummins ISX15 engine rated at approximately 550HP. This is a used engine that has been run tested and... Warranty ConditionUsedHorse Power550 HPStock Number2172 MLS Number14274685CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 9 Photos View 0 Videos Detroit Series 60 14.0L 515HP Engine – Used – Fully Tested – Warranty | Call (305) 833-9956 $14,000 USD Contact for rental/lease prices Detroit Diesel Series 60 14.0L 515HP Engine – Used – Fully Tested – Warranty, At Optimum Truck Parts, we specialize in used, rebuilt, and new diesel engines, transmissions, and heavy-duty... Warranty ConditionUsedHorse Power515 HPStock Number2169 MLS Number14271668CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 7 Photos View 0 Videos REBUILT - Mack E7-460 Engine FULLY TESTED, W/WARRANTY $21,500 USD Mack E7-460 Diesel Engine – Rebuilt – Fully Tested – Warranty, Heavy-duty Mack E7-460 diesel engine professionally rebuilt and fully tested prior to sale. This engine is known for its... Warranty ConditionUsedHorse Power460 HPStock Number2158 MLS Number14234546CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 4 Photos View 0 Videos 2008 Mercedes-Benz MBE 460 Engine $15,000 USD GOOD USED 2008 MERCEDES BENZ DPF ENGINE 460HP S#0460896250 GOOD RUNNING ENGINE, CORE EXCHANGE NEEDED Warranty ConditionUsedHorse Power460 HPPart NumberC01-00128-001Stock Number1816 MLS Number12651420CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 4 Photos View 0 Videos REMANUFACTURED - 2006 Mack AI 460 Engine W/Engine Break $22,500 USD GOOD RUNNING ENGINE Warranty ConditionRemanufacturedHorse Power460 HPStock Number2010 MLS Number13352098CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
Featured Item View 4 Photos View 1 Video REMANUFACTURED - 2001 Caterpillar C15 6NZ REBUILT Engine $35,000 USD Rebuilt 2001 Caterpillar C15 6NZ Diesel Engine For Sale with Jake Brakes, 550HP, SINGLE TURBO, 6 Cylinders, 15.2L, 70-PIN, Engine Serial# 6NZ***, Stock# 2424 Warranty ConditionRemanufacturedHorse Power550 HPStock Number2029 MLS Number13506484CategoryEngines Last Updated4/20/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 1994 Cummins 6CT 8.3 Engine for 1994-1996 COMMERCIAL TRUCK Recently Updated $8,500 USD 1994 CUMMINS 6C8.3 Engine CPL:1563, HP:210 ENGINE CONFIGURATION:D413024BX02 LOW MILES, GOOD RUNNER ENGINE, 60 DAYS WARRANTY, BLOCK, CRANKSHAFT AND CYLINDER HEAD. PARTS ONLY. Warranty Quantity2ConditionUsedCPL/ARR1563Horse Power210 HPFits To EquipmentCOMMERCIAL TRUCKFits To Make(s)CUMMINSWill Fit Year(s)1994-1996Weight3500Stock NumberS074723 MLS Number11086610CategoryEngines Last Updated5/12/2026 LocationMEDLEY, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 1 Photo View 0 Videos 1998 Cummins 6CT 8.3 Engine Block / Cylinder Block for 1998 COMMERCIAL TRUCK Recently Updated $8,500 USD 1998 CUMMINS 6C8.3 Engine CPL:1563, HP:249 ENGINE RUN GOOD RUNNER ENGINE, 60 DAYS WARRANTY, BLOCK, CRANKSHAFT AND CYLINDER HEAD. PARTS ONLY. Warranty Quantity2ConditionUsedCPL/ARR1563Horse Power210 HPFits To EquipmentCOMMERCIAL TRUCKFits To Make(s)CUMMINSWill Fit Year(s)1998Weight3500Stock NumberCloned Ad MLS Number11086612CategoryEngine Blocks / Cylinder Blocks Last Updated5/12/2026 LocationMEDLEY, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos Cummins 6CTA 8.3 Engine Block / Cylinder Block Recently Updated $8,500 USD GOOD RUNNER ENGINE 300HP, 60 DAYS WARRANTY, BLOCK, CRANKSHAFT AND CYLINDER HEAD. PARTS ONLY Warranty Quantity2ConditionUsedHorse Power275 HPPart NumberSO44823Stock Number393248 MLS Number11089286CategoryEngine Blocks / Cylinder Blocks Last Updated5/12/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 1 Video 1994 Cummins 6CT 8.3 Engine Recently Updated $8,500 USD CORE EXCHANGE NEEDED, GOOD RUNNING ENGINE. WATCH VIDEO Warranty ConditionUsedHorse Power275 HPStock Number1219 MLS Number11529172CategoryEngines Last Updated5/12/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 5 Photos View 0 Videos 1991 Caterpillar 3406B Engine & 3406C Recently Updated $19,780 USD GOOD RUNNING ENGINE, CORE EXCHANGE NEEDED Dismantled From: FREIGHTLINER Warranty ConditionUsedHorse Power425 HPStock Number1505 MLS Number12102171CategoryEngines Last Updated5/12/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 4 Photos View 0 Videos 1996 Caterpillar 3406B Engine Recently Updated $19,780 USD CORE EXCHANGE NEEDED, GOOD RUNNING ENGINE (INTERCOOLER) Warranty ConditionUsedHorse Power425 HPStock Number1242 MLS Number11212848CategoryEngines Last Updated5/12/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 9 Photos View 0 Videos Used 2014 Cummins ISX15 550HP CPL3939 Diesel Engine Running Good Warranty Newly Listed $19,530 USD Used 2014 Cummins ISX15 550HP CPL3939 Diesel Engine Running Good Warranty You are purchasing a used 2014 Cummins ISX15 diesel engine , Engine Model: Cummins ISX15, , Horsepower: 550 HP, , ... Warranty ConditionUsedCPL/ARR3939Horse Power550 HPStock Number2193 MLS Number14356394CategoryEngines Last Updated5/7/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 11 Photos View 0 Videos REBUILT Cummins ISX15 550HP Diesel Engine – TESTED – WARRANTY – CPL MATCH AVAILABLE Newly Listed $31,350 USD This Cummins ISX15 550HP rebuilt diesel engine has been professionally rebuilt, inspected, and run tested to ensure dependable performance 🔧 Engine Details:, Model: Cummins ISX15 ,... Warranty ConditionRemanufacturedHorse Power550 HPStock Number2192 MLS Number14356335CategoryEngines Last Updated5/7/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 9 Photos View 0 Videos USED CAT 3126 300HP Diesel Engine – RUN TESTED – GOOD RUNNER – READY TO SHIP – WARRANTY Newly Listed $8,000 USD This Caterpillar 3126 300HP diesel engine has been run tested and inspected to ensure proper performance. It is a good running takeout engine, ready for installation We specialize in... Warranty ConditionUsedHorse Power300 HPStock Number2191 MLS Number14353785CategoryEngines Last Updated5/6/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 9 Photos View 0 Videos USED Mack AI 460 460HP Engine 2006 – Good Running Takeout – Warranty $11,000 USD Mack AI 460 – 460HP – 2006 – Used – Good Running Takeout – Warranty Reliable Mack AI 460 diesel engine removed from a running unit and verified as a good running takeout prior to removal.... Warranty ConditionUsedHorse Power460 HPStock Number2190 MLS Number14345519CategoryEngines Last Updated5/1/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 10 Photos View 0 Videos USED 1988 CAT 3406C 425HP Engine – Tested Runner – Warranty $18,780 USD Caterpillar 3406C – 425HP – Mechanical – Used – Tested Runner – Warranty, Reliable Caterpillar 3406C diesel engine removed from a running unit and verified as a tested runner prior to... Warranty ConditionUsedHorse Power425 HPStock Number2189 MLS Number14345370CategoryEngines Last Updated5/1/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 8 Photos View 0 Videos USED Caterpillar C13 ACERT 475HP Engine – Strong Runner – Warranty $14,000 USD Caterpillar C13 ACERT – 475HP – Used – Good Running Takeout – Warranty, Reliable Caterpillar C13 ACERT diesel engine removed from a running unit and verified as a good running takeout prior... Warranty ConditionUsedHorse Power475 HPStock Number2188 MLS Number14339215CategoryEngines Last Updated5/1/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 10 Photos View 0 Videos USED - Mack AI 460 Engine 2006 – 460HP – Good Running Takeout – Warranty $10,000 USD Mack AI 460 – 460HP – 2006 – Used – Good Running Takeout – Warranty, Reliable Mack AI 460 diesel engine removed from a running unit and verified as a good running takeout prior to removal.... Warranty ConditionUsedHorse Power460 HPStock Number2187 MLS Number14335776CategoryEngines Last Updated4/28/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 9 Photos View 0 Videos Cummins ISX15 CPL3939 525HP Engine – Strong Runner – Warranty $19,000 USD Cummins ISX15 – 550HP – CPL 3939 – Used – Strong Runner – Warranty, Reliable Cummins ISX15 diesel engine removed from a running unit and verified as a strong running takeout prior to... Warranty ConditionUsedCPL/ARR3939Horse Power525 HPStock Number2186 MLS Number14331550CategoryEngines Last Updated5/1/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info
View 9 Photos View 0 Videos Eaton Fuller RTLO18913A Transmission – Rebuilt 2026 – 13 Speed – Warranty $6,000 USD Eaton Fuller RTLO18913A – Rebuilt 2026 – 13 Speed – Warranty, Professionally rebuilt Eaton Fuller RTLO18913A 13-speed transmission, completed in 2026. This unit has been rebuilt using... ConditionRemanufacturedStock Number2185 MLS Number14330775CategoryTransmissions Last Updated4/24/2026 LocationMedley, FL, US Sold ByOptimum Truck Parts LLC (844) 938-___ SHOWNUMBERCall Seller Email Seller Save More Info